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混凝土施工缝留设原则

浏览:45次 | 提问时间: 08-05 03:12
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6个答案
妨碍习惯 08-05 03:13

施工缝的位置应设置在结构受剪力较小和便于施工的部位, 且应符合下列规定:柱应留水平缝, 梁、板、墙应留垂直缝。( 1) 施工缝应留置在基础的顶面、梁或吊车梁牛腿的下面、吊车梁的上面、无梁楼板柱帽的下面。( 2) 和楼板连成整体的大断面梁, 施工缝应留置在板底面以下20mm~30 mm 处。当板下有梁托时, 留置在梁托下部。( 3) 对于单向板, 施工缝应留置在平行于板的短边的任何位置。( 4) 有主次梁的楼板, 宜顺着次梁方向浇筑, 施工缝应留置在次梁跨度中间1/3 的范围内。 ( 5) 墙上的施工缝应留置在门洞口过梁跨中1/3 范围内, 也可留在纵横墙的交接处。( 6) 楼梯上的施工缝应留在踏步板的1/3 处。( 7) 水池池壁的施工缝宜留在高出底板表面200 mm~500 mm 的竖壁上。( 8) 双向受力楼板、大体积混凝土、拱、壳、仓、设备基础、多层刚架及其他复杂结构, 施工缝位置应按设计要求留设。

许嵩 08-05 03:21

留置在板底面以下20~30MM处;3范围内,并宜留置在结构受剪力较小且便于施工的部位,留置在梁托下部;3范围内,宜留置在基础顶面施工缝留置施工缝的位置应在混凝土浇筑之前确定.且应符合下列规定、梁或吊车牛腿的下面:( 1 ) 柱、吊车梁的上面,无梁楼的下面;(2)与楼板连成整体的大截面梁,留置在平行于板的短边的任何位置,施工缝应留置在次梁跨度的中间1/,留置在门洞口过梁跨中1/;(4)有主次梁的楼板宜顺着次梁方向浇筑;(5)墙;(3)单向板。当板下有梁托时,也可留在纵横墙的交接处

笑谑 08-05 03:29

留置在板底面以下20~30MM处;3范围内,并宜留置在结构受剪力较小且便于施工的部位,留置在梁托下部;3范围内,宜留置在基础顶面施工缝留置施工缝的位置应在混凝土浇筑之前确定.且应符合下列规定、梁或吊车牛腿的下面:( 1 ) 柱、吊车梁的上面,无梁楼的下面;(2)与楼板连成整体的大截面梁,留置在平行于板的短边的任何位置,施工缝应留置在次梁跨度的中间1/,留置在门洞口过梁跨中1/;(4)有主次梁的楼板宜顺着次梁方向浇筑;(5)墙;(3)单向板。当板下有梁托时,也可留在纵横墙的交接处

逐花而居 08-05 03:38

1、 施工缝的位置应设置在结构受剪力较小和便于施工的部位, 且应符合下列规定: 柱应留水平缝, 梁、板、墙应留垂直缝。( 1) 施工缝应留置在基础的顶面、梁或吊车梁牛腿的下面、吊车梁的上面、无梁楼板柱帽的下面。( 2) 和楼板连成整体的大断面梁, 施工缝应留置在板底面以下20mm~30 mm 处。当板下有梁托时, 留置在梁托下部。( 3) 对于单向板, 施工缝应留置在平行于板的短边的任何位置。( 4) 有主次梁的楼板, 宜顺着次梁方向浇筑, 施工缝应留置在次梁跨度中间1/3 的范围内。( 5) 墙上的施工缝应留置在门洞口过梁跨中1/3 范围内, 也可留在纵横墙的交接处。( 6) 楼梯上的施工缝应留在踏步板的1/3 处。( 7) 水池池壁的施工缝宜留在高出底板表面200 mm~500 mm 的竖壁上。( 8) 双向受力楼板、大体积混凝土、拱、壳、仓、设备基础、多层刚架及其他复杂结构, 施工缝位置应按设计要求留设。2、处理方法砼终凝后,挡板拆除,用斩斧或钢杆将表面凿毛,清理松动石子,此时砼强度很低,凿深20~30MM较容易,待二次浇筑砼时,提前用压力水将缝面冲洗干净,边浇边刷素水泥浆一道,以增强咬合力。

我很好啊能疯能闹还能微笑 08-05 03:46

1、 施工缝的位置应设置在结构受剪力较小和便于施工的部位, 且应符合下列规定: 柱应留水平缝, 梁、板、墙应留垂直缝。( 1) 施工缝应留置在基础的顶面、梁或吊车梁牛腿的下面、吊车梁的上面、无梁楼板柱帽的下面。( 2) 和楼板连成整体的大断面梁, 施工缝应留置在板底面以下20mm~30 mm 处。当板下有梁托时, 留置在梁托下部。( 3) 对于单向板, 施工缝应留置在平行于板的短边的任何位置。( 4) 有主次梁的楼板, 宜顺着次梁方向浇筑, 施工缝应留置在次梁跨度中间1/3 的范围内。( 5) 墙上的施工缝应留置在门洞口过梁跨中1/3 范围内, 也可留在纵横墙的交接处。( 6) 楼梯上的施工缝应留在踏步板的1/3 处。( 7) 水池池壁的施工缝宜留在高出底板表面200 mm~500 mm 的竖壁上。( 8) 双向受力楼板、大体积混凝土、拱、壳、仓、设备基础、多层刚架及其他复杂结构, 施工缝位置应按设计要求留设。2、处理方法砼终凝后,挡板拆除,用斩斧或钢杆将表面凿毛,清理松动石子,此时砼强度很低,凿深20~30MM较容易,待二次浇筑砼时,提前用压力水将缝面冲洗干净,边浇边刷素水泥浆一道,以增强咬合力。

甜蜜的记忆死在流年 08-05 03:55

二楼的可以借鉴,一般工厂里面施工缝是6-8米或者4-6米,柱子边开菱形。切割缝要及时,不然地面会有裂痕的

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